function showDiv(){
		document.getElementById("popDiv").style.display='block';
		document.getElementById("bg").style.display='block';
	}
		/**
		关闭弹出层
		*/
	function hideDiv(){
		document.getElementById("popDiv").style.display='none';
		document.getElementById("bg").style.display='none';
	}
	
	var oldDiv = "";
	function changeQrcode(){
		oldDiv  = $('#form-login').html();
		var html = "<div style=\"width:360px;margin-left:-20px;text-align:center;\"><img width=\"200\" height=\"200\" alt=\"\" src=\"images/windxun.png\"><div>";
		$('#tb').html(html);
		$('#changeQrcode').attr("onclick","javascript:changeHtml();").html('账号登录');
	}
	
	function changeHtml(){
		$('#form-login').html(oldDiv);
		$('#changeQrcode').attr("onclick","javascript:changeQrcode();").html('扫码登录');
	}